In vivo effect of a urea containing dentifrice on dental calculus formation. II.
D000328:Adult; D002986:Clinical Trials as Topic; D003728:Dental Calculus; D003802:Dentifrices / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos; D013053:Spectrophotometry; D014508:Urea / Q000627:therapeutic use*
D003802:Dentifrices; D010919:Placebos; D014508:Urea